2421522 has 16 divisors (see below), whose sum is σ = 5381280. Its totient is φ = 807156.

The previous prime is 2421511. The next prime is 2421527. The reversal of 2421522 is 2251242.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2421495 and 2421504.

It is not an unprimeable number, because it can be changed into a prime (2421527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22368 + ... + 22475.

It is an arithmetic number, because the mean of its divisors is an integer number (336330).

2^2421522 is an apocalyptic number.

2421522 is an abundant number, since it is smaller than the sum of its proper divisors (2959758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2421522 is a wasteful number, since it uses less digits than its factorization.

2421522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44854 (or 44848 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 2421522 is about 1556.1240310464. The cubic root of 2421522 is about 134.2856089805.

Adding to 2421522 its reverse (2251242), we get a palindrome (4672764).

It can be divided in two parts, 242 and 1522, that added together give a square (1764 = 42²).

The spelling of 2421522 in words is "two million, four hundred twenty-one thousand, five hundred twenty-two".